Multi-mode operation and its control strategy of flexible interconnected system for distribution network

被引：0

作者：

Duan Q. ^{[1
]}

Sha G. ^{[1
]}

Sheng W. ^{[1
]}

Yang W. ^{[2
]}

Wang Z. ^{[2
]}

Fu L. ^{[3
]}

机构：

[1] Beijing Key Laboratory of Distribution Transformer Energy-saving Technology, China Electric Power Research Institute, Beijing

[2] National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha

[3] State Grid Shanghai Pudong Electric Power Supply Company, Shanghai

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2020年 / 40卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Distribution network; Flexible interconnection; Main transformer overload; SNOP; Unbalanced load; Virtual synchronous generator;

D O I：

10.16081/j.epae.202007025

中图分类号：

学科分类号：

摘要：

Flexible interconnected system for distribution network based on SNOP(Soft Normally-Open Point) might have issues including multi-mode operation and switching, unbalanced feeder load and main transformer overload. To address these issues, a load balancing regulation strategy and automatic regulation strategy of main transformer overload based on virtual synchronous machine technology are proposed. Firstly, the operation mode of system is divided according to the load condition of feeder and main transformer. Subsequently, through the analysis on balance relationship of power transmission and switching logic of different operating modes, the active power regulation instructions of SNOP under multi-mode operations are obtained according to respective control strategies. As a result, the multi-mode stable operation and free switching of the system are realized. At the same time, the feeder load balancing and overload automatic regulation of main trans-former are realized, in which the control strategy switching is not required. © 2020, Electric Power Automation Equipment Press. All right reserved.

引用

页码：9 / 16

页数：7

共 26 条

[1]

WANG Shouxiang, ZHANG Qi, WANG Han, Et al., Optimal planning method for regional multi-microgrid system with high renewable energy penetration, Electric Power Automation Equipment, 38, 12, pp. 33-38, (2018)

[2]

DUAN Qing, SHENG Wanxing, MENG Xiaoli, Et al., Research of energy sub grid for the future energy internet, Proceedings of the CSEE, 36, 2, pp. 388-398, (2016)

[3]

XU Cheng, LIANG Rui, CHENG Zhenhe, Et al., Security situation awareness of smart distribution grid for future energy internet, Electric Power Automation Equipment, 36, 6, pp. 13-18, (2016)

[4]

LI Jiangha, Simple analysis of the reason and protective step of 10 kV distribution network causing circumfluence, Power System Technology, 30, pp. 199-201, (2006)

[5]

WANG Chengshan, SONG Guanyu, LI Peng, Et al., Research and prospect for soft open point based flexible interconnection technology for smart distribution network, Automation of Electric Power Systems, 40, 22, pp. 168-175, (2016)

[6]

YANG Huan, CAI Yunyi, QU Zisen, Et al., Key techniques and development trend of soft open point for distribution network, Automation of Electric Power Systems, 42, 7, pp. 153-165, (2018)

[7]

DONG Xuzhu, LIU Zhiwen, LI Peng, Et al., Intelligent distribution network control technology based on multi-terminal flexible distribution switch, Proceedings of the CSEE, 38, pp. 86-92, (2018)

[8]

BLOEMINK J M, GREEN T C., Increasing distributed generation penetration using soft normally-open points, IEEE PES General Meeting, pp. 1-8, (2010)

[9]

JIA Guanlong, CHEN Min, ZHAO Bin, Et al., Application of flexible multi-state switch in intelligent distribution network, Transactions of China Electrotechnical Society, 34, 8, pp. 1760-1768, (2019)

[10]

HU Yu, GU Jie, MA Rui, Et al., SNOP robust optimization for distribution network resilience enhancement, Electric Po-wer Automation Equipment, 39, 11, pp. 85-91, (2019)

← 1 2 3 →